Vasara has two stores near Yokohama station, but only this location has children's yukata. I booked an appointment online. Although the website is a bit hard to navigate for foreigners, the rest of the process went smoothly. The staff was very friendly, and she was able to communicate with us using English. The children's yukata patterns are mostly flowers with Disney characters. They only have 1-2 patterns for different height groups. The selection is a bit limited, but my kids like the pattern. The staff provided basic hairdo with no additional charge. Overall, a very good experience. Thank you!